Joseph jauch



(No Model.)

.11. JAU C H. CENTRAL DRAFT LAMP.

Patented Feb. 11

N. PETERS, Pmnmmo n har, Wailuingicm D. c,

. conduct a portion of the air for the support of UNITED STAT-Es PATENTOFFICE.

JOSEPH JAUCH, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE BRADLEY dcHUBBARD MANUFACTURING COMPANY, OF SAME PLACE.

CENTRAL-DRAFT LAMP.

SPECIFICATION forming part of Letters Patent No. 421,171, dated February11, 1890.

Application filed May 24, 1889.

To all whom it may concern:

Be it known that I, JOSEPH J AUGH, of Meriden, in the county of NewHaven and State of Connecticut, have invented a new Improvement inBurners for Central-Draf t Lamps; and I do hereby declare the following,when taken in connection with accompanying drawings and the letters ofreference marked thereon, to be a full, clear, and'exact description ofthe same, and which said drawings constitute part of this specification,and represent, in-

Figure 1, a side View of the burner, half in vertical central section;Fig. 2, a modification.

This invention relates to an improvement in that class of burners whichare adapted to employ a tubular wick, the wick being arranged around atube, which forms a fine to combustion centrally through the wick,commonly called central-draft lamps. These burners usually employ achimney, and in ad dition to the supply of air through the central tubethere must be an abundant supply around the outside of the wick to theflame within the chimney. This outward supply is usually produced bymaking the chimney-rest of considerably larger diameter than the wick,and the base of the burner below the chimney-rest perforated for theadmission of air into the chamber surrounding the wick, whence it flowsupward into the chimney to be brought upon the flame by the naturaltendency of the draft.

In employing wicks of large diameter, in which a correspondingly largeflame is produced, a great supply of air around the outside of the wickand into the burner is necessary, and as the outer wall of the burnerthrough which the air passes is exposed to surrounding influences orcurrents the flow of air is unavoidably variable. Again, the spacebetween the chimney and the wick is so large that there is anopportunity for a great proportion of the air to pass upward outside theflame without contact therewith, and so as not to materially aid incombustion, the result of which is a more imperfect combustion than isdesirable.

The object of my invention is to avoid these difficulties, to preventthe influence of the ex Serial No. 311,973. (No model.)

terior currents of air upon the outer supply, and at the same time todirect theairinto the base of the flame, so as to produce the moreperfect combustion; and the invention consists in the construction, ashereinafter de- 5 3 scribed, and particularly recited in the claim.

In the illustration I show only so much of a burner as necessary to thefull understanding of the invention.

A'represent-s the central-draft tube, around which the wick is arrangedin the usual manner; B, the inner wall of the burner, which surroundsthe wick,and so that the wick stands between this inner wall B of theburner and the tube A. The outer wall C of the burner extends upward inthe usual manner and so as to form the usual air-chamberD within theburner. This outer wall C terminates at its upper edge in a chimney-restE. The wallC is perforated in the usual manner for the admission of air,there being an opening be tween the CllllllllGYdGSl) and the inner wallB of the burner for the passage of air. This opening is usually leftclear, so that there is a free and clear passage for the air from thechamber 7 5 upward into the chimney outside the flame.

To form a deflector for the air thus supplied to the outside of theflame and to insure its impingement directly upon the flame,l introducean annular partition F, extending from the wall of the burner from apoint a below the chimney-rest, curved inward and upward, and so as todivide the passage into the chim' ney into two parts Z) (Z. The outeredge of the said partition is secured between the top or upper edge ofthe outer wall 0 and the chimney rest, the outer edge of thechimney-rest being closed over the outer edge of the said partition andthe upper edge of the said wall C, so as to firmly unite the parts andsecurely 0 hold the partition F as a permanent part of the burner, thecurve of the partition F from the outer edge inward and upward producingthe division and giving an inclination to the partition, which serves asa deflector in turn- 5 ing the air. This partition forms a deflector forthe air which passes through the outer wall of the burner to direct orbring it into aposition close upon the base of the flame.

The partition F forms an air-chamber G 10o above the air-chamber D, andinto this chamber G perforations below the chimney-rest, open for theadmission of air. The admission of air into this chamber G forms asecond current independent of themain current coming through the chamberD. The current from the chamber G will enter the chimney through thepassage 29, and in its flow will be directed against the current whichis coming up through the passage d, and these two currents combining,one through the passage 61 being nearly vertical while that through thepassage 1) will be inward and through the flame, will tend not only toforce itself into the flame, but also to force that current which passesup through the passage cl, thus controlling the entire amount of air anddirecting it upon the flame close upon its base, so as to insure asufficient supply for the most perfect combustion. The result of thisconstruction is to make a flame very white and give to it an intensityof light very much greater than can befunction of dividing anddeflecting the currents.

Ido not claim, broadly, a division in a 1ampburner adapted to turn aportion of the air admitted to the chimney directly to the flame andanother portion into the chimney outside the said first portion of theair, as such I am aware is not new.

I claim- In a burner for central-draft lamps, the combination of theinner Wall E, the outer perforated wall O, forming an air-chamber D, achimney-rest E above said chamber D, an annular partition F, restingupon the upper edge of the said wall 0, the chimney-rest closed over thesaid upper edge of the wall and the outer edge of the partition tosecure the parts JOSEPH J AUCH.

Witnesses:

F. B. FAIRBANKS, A. E. HALL.

